From 24918837c3ff9026d228657d14852c9cf39a5644 Mon Sep 17 00:00:00 2001
From: Kelly Rauchenberger <fefferburbia@gmail.com>
Date: Wed, 3 Feb 2021 01:11:31 -0500
Subject: Added camera system

---
 src/camera_system.cpp | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/camera_system.cpp

(limited to 'src/camera_system.cpp')

diff --git a/src/camera_system.cpp b/src/camera_system.cpp
new file mode 100644
index 0000000..abeba86
--- /dev/null
+++ b/src/camera_system.cpp
@@ -0,0 +1,27 @@
+#include "camera_system.h"
+#include "sprite.h"
+#include "game.h"
+#include "map.h"
+
+void CameraSystem::tick(double dt) {
+  if (!locked_) {
+    const Sprite& follow = game_.getSprite(followingSprite_);
+    const Map& map = game_.getMap();
+    vec2i mapBounds = map.getMapSize() * map.getTileSize();
+
+    pos_ = follow.loc() - (fov_ / 2);
+
+    if (pos_.x() < 0) {
+      pos_.x() = 0;
+    }
+    if (pos_.y() < 0) {
+      pos_.y() = 0;
+    }
+    if (pos_.x() + fov_.w() >= mapBounds.w()) {
+      pos_.x() = mapBounds.w() - fov_.w() - 1;
+    }
+    if (pos_.y() + fov_.h() >= mapBounds.h()) {
+      pos_.y() = mapBounds.h() - fov_.h() - 1;
+    }
+  }
+}
-- 
cgit 1.4.1